Holder for viewing transparencies.



Patented Aug. 31, 1915.

APPLICAHON FILtD ]AN.23,1915.

am@ L UNTED STAT-ES PTENT QFFC@ To aZZ lwhom it mayiomwemaj" I Be it known that LiiNumN J. FALn, :i citizen :of theUnitedStates, and ',resident rof. New York' city, fin theicountypf New York andState of New` York, have invented certain new/and useful Improvements in Holders for Viewing Transparencies., of which thefollowing is a specification.

In the making ofthe transparenciesiby color photoc'raphy, it often happens :that the correct combination. o f colors andthe correct tone or vshade has `not been, secured and therefore the complete'gpicturefoften has a more or less pronouncedexcess of some particular color, and the picture .does not appear true to nature or to thel original from which the transparency was made. Ifurthermore, different kinds of artiiicial. I light have dierent predominating colors and colcred trans arencics which will appear 'in the correct co or and tone when viewed byday.- light, will not appear right twhen viewed by artificial light. l." l, -1

-The main object of my invention is to provide means whereby the deficiency or excess of the particular colorJin the transparency when viewed by day-li ht may be coim-y teracted or corrected, and ,w ereby the transparency mav'be 'ada ted 'has far as possible to be viewed when ,il uminated by any particular character ofarticial light.

Reference is to behadto'theccompanying drawings in which similar reference characters indicatecorresponding parts in ,i

both of the views, in which,` i.. Fi ire 1 is a perspective view of one form whic may be employed for supporting the transparency and permittin it to be viewed to give the proper effect an Fig. 2 is a vertical longitudinal section of a similar-device, but provided with a se arate color screen. In the specific form i ustrated in Figs. 1 and 2, I provide two frames 10 and 11 ivotally connected to ether by a suitable hinge orother device 1 and having triangular side walls 13, 13. These latter are preferably of fabric and designed to fold inwardl as the frames swing toward each other a though they may be of sheet` metal if desired. For limiting the movement of the frames away from each other and for holding them at substantially the angle shown, the two frames are connected by two airs of pivoted links 14 and 15 of any sui able character. The frame nlllnormally serves as a heee and carries a mirror 16* with a luit Specifications! Letters Patent; j '}','."-;v' EN?" 'I f Application illed January 2B, 191,15,I Burial No..l,8 11.j. l

ably inserted inthelframe in inverte 4 zontalA position and` viewed ,jiatenteaI Aug. si, isis.

able-,reflecting sdrface,.while the other frame 10 carries .the v transparency 17 which, for the ,present purposes I,will b e considered as a .positiye on,g`lass an y showing some person ,obf'ectorscene hotographed in the natura co ors. The lco orl transparency is refer- OS1- tion so that rwhen the mirror is held in oriby a person, Ilookingjn thedirectionof the arrow, between. tlie twoide w`alls,13, 13, the picture will-appear ;ri litsid'e-up'in the mirror.

i Aspreviou y stated, the main object of mdyinventlion ,iste Isecure the proper color e ect in the transparency and to counteract deiicienc Ior excess in any one, color or tint. ToI dok-t is,.I. rovide a sheet or layer of colormedium U sposed .in the line of vision between the observer and the source of light. -IK avoid the` necessity Iof using al separate color, screen and at the same'time avoid adding tothe weightof the device by combining theI mirror end ,tliecplor screen.. The ig* mentmaybe ap lied to` the upperor re cct ing surfaceof t e mirror or may be incorprated in theiinaterial forming the mirror, `or may lbeembodied in anypther suitable 'manner'. s0 .astofcome .in the; line of vision betweenthecbserver and thelsource of li ht. If thev 'pigment be incorporated in or app ied ytp 'the 4-inirroror l) so disposed that the lightnraylsin',y passingljrom the source. of light"'through the transparency to the refvlectingisur ace and vlthen upwardly to ythe observer, pass through the color medium both before and afterstrikin the reflecting surface, a color medium of on y ono-half the density or thickness need be employed from what would be necessary if the li ht rays only passed through the pigment layer or color screen once.

In Fig. 2, I have shown a construction somewhat similar to that shown in Fig. l except that instead of'having a combined color screen and mirror 16, I employ an ordmary mirror 16". I have shown a se arate color screen in the form of a sheet o glass 1 8 which may have a thin coating of the desired color medium thereon or may have the pigment incorporated in the glass. Preferably, the screen is secured to the frame 10 so as to form a ermanent part of the device and permit ldi erent transparencies to be placed therein. The transparency may be removed from the frame by sliding it downn wai-dly against a small lcail spring 19 until IGI its upper edge comes out of a socket at the upper end of the frame. Preferably the retaining -fiange 21 which extends across the upper edge, Vdoes not extend across the side edges, sol that the transparency may be swung upwardly out of the frame when moved downwardly against the spring to a suflicient extent to bring it out of the pocket at the upper edge of the frame, Preferably this color screen is placed below the transparency and secured in place, but it is of course evident that the screen may be removable and as far as the corrective effect is concerned, the screen might be above instead of below the transparency.

Although I have shown the screen in the form of a glass plate embodying or carrying the pigment, it is of course evident that a (zelluloid or gelatinous screen of the desired color might be employed. The character, as well as the degree, ot' coloring in the screen or mirror may be varied in accordance with the character of the transparency, the result which it is desired to produce, or the condition or character `of the source of light used as the illuminating means. .The mirror itself may be polished metal plate of the desired color.

The light rays from the source of light will pass downwardly through the transparency and the color screen to the mirror and thence be reliected upwardly to the observer who'will look at the mirror in the direction iildicated by the arrow.

It is evident that by selecting a color screen of the proper color, shade or tint, in respect to the character of the artificial light employed, I may cause a transparency which when alone appears in the true. and correct colorsl by day-light, to also appeal' in the true and correct colors by artificial light.

By having the device itself made up with a screen made to counteract the effect of the particular kind of artificial light used by the owner of the device, he may view or show his transparencies at night to equally. as good advantage as he could in the day time. Conversely, transparencies which do not appear true by day-light but which are intended to be use d in connection'with an artilicial light of a particular color so that when viewed with said artificial light they appear true, can be `viewed in day-light with my improved deice by employing a screen or colored mirror `of the same color as that of the artificial light with which the transparency was .designed to he used.

i Having thus described my invention, what I claim as new and desire to secure by vLetters Patent is:

A device for viewing color transparencies,

comprising a `base presenting an upwardly facing, approximately horizontal colored mirror, and. a frame for supporting the transparency at an 'angleto said base and extending upwardly andover said mirror from one edge thereof, the color of the mirror being such in respect to the color of the transparency that the transparency, when yiewed in the mirror, by light rays passing through the transparency, will appear in the proper colors irrespective `of color deficiem) cies in the transparency orin thev source of light. l ""r January, A; D. 1915. i

BENJAMIN -J. FALK- Signed at New York city, the county Oi\, New York and State of New York, 26th of 

